Yuri Slobodyanyuk's blog on IT Security and Networking sharing experience and expertise

Configuring SNMP in Gaia as opposed to SPLAT has been made much simpler. So simple that it is easy to overlook that default configured read-only community is public .
So , it is a good idea to change it while enabling SNMP:
set snmp agent on
set snmp agent-version any
set snmp community public read-only

PS. Another ‘feature’ of the SNMP is that you can either enable SNMP version 1 and 2 or version 3. Trying to enable just version 2c is not possible.